It is advantageous from a cost effectiveness and optimum usability standpoint to use safety sensors that are characterized by functions that match the specific requirements of the given application as closely as possible. The Multiple Light Beam Safety Device MLD 500 (type 4, PLe) has been specially designed for this.

As for the MLD 300 series (type 2, PL d), the MLD 500 sensors are characterized by their individual function classes. A start/restart interlock and contactor monitoring can thereby be selected and, if necessary, various Muting modes realized. The series can be used both as standard access guarding as well as for applications where Sequential, Parallel or Partial Muting is required. Additional Muting devices are not required, thus simplifying construction and lowering costs during setup of the Muting application.

The series is predestined for wide-area perimeter guarding, which is realized with Deflecting Mirrors, enabling operation at ranges of up to 70 m. In addition to transmitter/receiver versions, 2- and 3-beam (patented) Transceiver versions are also available. No PC is necessary for configuration, as the functions are set via the pin assignments at the connection. Operating temperatures as low as -30 ° C are possible. Options such as the Laser Alignment Aid, a Muting indicator and the patented swivel mount for easy fastening and alignment round out the MLD product range.

• Version available as 3-beam Transceiver
   
• Integrated Muting function, no additional Muting module is necessary
   
• The configuration is simply performed by means of wiring, i. e. no software, PC or Dip switch are necessary
   
• The use at ambient temperatures as low as -30 ° C is possible
   
• Options: integrated Laser Alignment Aid, integrated Muting indicator, 7-segment display